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(Polish) National Copernicus proposed (Heliocentrism).

Nebulae are (dust) and (gas).

The eight planets in the solar system are (Mercury) (Venus) (Earth) (Mars) (Jupiter) (Saturn) (Uranus) (Neptune).

Do you know which constellations are in the sky in summer? Cygnus, one of the northern constellations, is located in the Milky Way. The brightest star in the constellation is a white 1 star "Tianjin IV". Cygnus is like a swan stretching its neck and spreading its wings on the Milky Way. The main bright stars of Cygnus are arranged in a cross, also called "Northern Cross". Cygnus has 22 brighter stars than 4. Constellation 6 1 is one of the nearest stars.

Lyra, one of the northern constellations, is located on the north side of the Milky Way. Among them, Vega is a white star of magnitude 0 and the brightest star in the northern sky; It is arranged in triangles and diamonds, with some small stars beside it. Lyra has eight stars brighter than four.

One of the zodiac signs, located in the southeast of the Milky Way. The Altair in the constellation is a white 1 star. Altair is arranged in a straight line with two small stars evenly distributed on both sides, commonly known as "Altair Samsung" or "Polaris". Eagle has 13 stars brighter than 4.

The southernmost constellation of the zodiac in Scorpio, with a wide range and many stars, is the most striking constellation in the summer sky in the northern hemisphere. It appears in the southern sky, shaped like a scorpion, with its tail pointing southeast. Antares in the constellation is a red starlight 1 star, which was called "fire" in ancient China. Scorpio has 22 stars brighter than 4. )

Attached:

North celestial pole: Tianlong star.

Mid-latitude in the northern sky: Lyra, Cygnus and Five Immortals: Fox, Arrow and Dolphin.

Equator: Ophiuchus and Eagle.

Mid-latitude in the southern sky: Scorpio, Sagittarius, corona, telescope, square, Temple of Heaven and South Triangle.

South celestial pole: peacock, swallow, South Pole.